Computer Vision of Optimal Geometric Concentration Ratio for the Solar Ball Lens

Abstract

This research evaluates the optical properties of an inhomogeneous and non-paraxial system using a solar ball lens (SBL) as a new thermal solar concentrated collector. This evaluation is based on detecting a diacaustic curve in a straightforward and accurate manner, with the diagnostic relying on image processing as a computational tool using the MATLAB program rather than a complicated numerical analytic procedure. The circle of least confusion (CLC) of the (SBL), (Fluorinated ethylene propylene (FEP) polymer – water core), was calculated. Furthermore, the study evaluated the maximum geometrical concentration ratio (G C) of refracted solar radiation that can be captured by a receiver of the (SBL). Without energy losses due to spherical aberration, the (G C) ratio was (14.10) at (h/r) ratio, circular aperture radius to ball radius, around (0.6). The investigation also revealed an aplanatic point for preventing the development of optical envelope inside the solar ball lens at (h/r) equal to 0.8638, as well as a maximum (h/r) value of 0.7351 for collecting solar radiation.

Implementation of a Circular Shape Patch Antenna at 2.4 GHz for Different Wireless Communications

“…As shown in Figure 11. This result is very close to the antenna's work area, and it is possible to work with good efficiency for this value of the breach impedance based on the values of Abdulhussein et al [16], Hossain et al [17], Hadi et al [18], and Abbas et al [19]. Finally, the theoretical results that were adopted to build this antenna using CST of the resonant frequency of 2.4 GHz.…”

Effect of traditional and automated sorting on some tomato's properties

“…And this varying environmental diversity led to a variety in the plant's morphological, physiological and molecular forms 4,5 . Tomato is consumed in various ways, including raw tomatoes, sauces, salads, and drinks, a fruit rich in lycopene, which has beneficial health effects for humans 6 . Tomatoes are widely grown in Iraq in various forms of cultivation, but productivity is still low 7 .…”

Level Density of the Pre Compound Nucleus Calculations for [₂₈ ⁶⁰Ni], [₂₈ ⁵⁸Ni], Using Exciton Model

“…The models which do not distinguish between protons and neutrons particles are called the one component model [11], which divided the excions into particles and holes only. The real nucleus does not composed of one type of particles and holes but it consists of protons and neutrons particles and holes, the model which is deal with the nucleus as a system of protons and neutrons is called the two component model [12].…”